An Isolated Semiresonant DC/DC Converter for High Power Applications

Catona, G.; Bianconi, E.; Maceratini, R.; Coppola, Giovanni; Fumagalli, Luca; Petrone, G.; Spagnuolo, G.

doi:10.1109/tia.2016.2645900

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…Isolated converters isolate the output from the input electrically dividing circuit into two separate sections preventing the direct flow of current. This is achieved by using a high-frequency transformer but it increases the size and cost [3]- [6] of the converter. Isolated topologies are favoured in high power applications and where common ground between source and load is required.…”

Section: Introductionmentioning

confidence: 99%

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Khan

Zaid²,

Mahmood

et al. 2021

IEEE Access

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High gain dc-dc converters are used in several applications which include solar photovoltaic system, switch-mode power supplies and fuel cells. In this paper, an ultra-high gain dc-dc boost converter is proposed and analysed in detail. The converter has a gain of six times as compared with the boost converter. The high gain is achieved by utilizing switched inductors and switched capacitors. A modified voltage multiplier cell (VMC) with switched inductors is proposed. The converter has a single switch which makes its operation easy. Moreover, the voltage across the switch, diodes and capacitors are less than the output voltage which increases the overall efficiency of the converter. The converter performance in steady-state is analysed in detail and it is compared with other latest high gain converters. The working of the converter in non-ideal conditions is also discussed in detail. The loss analysis is done using PLECS software by incorporating the real models of switches and diodes from the datasheet. To confirm and validate the working of the proposed converter a hardware prototype of 200 W is developed in the laboratory. The converter achieves high gain at low duty ratios and its performance is found to be good in open and closed loop conditions. INDEX TERMSBoost Converter, DC Microgrid, Duty cycle, Ultra High Gain, Voltage stress Battery Fuel Cell High Gain DC-DC Converter Solar PV Cell Low DC Voltage (12-60V) High DC Voltage (200 -300V

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Section: Introductionmentioning

confidence: 99%

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Khan

Zaid²,

Mahmood

et al. 2021

IEEE Access

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“…Isolated converter configurations e.g. pushpull, flyback, forward, half-bridge, and full-bridge converters has been proposed in the literature to achieve high voltage conversion by adjusting the turn ratio of the transformer or coupled inductors [8]- [10]. Nevertheless, transformer core saturation, high voltage spikes across switches, power dissipation, bulky circuitry etc.…”

Section: Introductionmentioning

confidence: 99%

A New Triple-Switch-Triple-Mode High Step-Up Converter With Wide Range of Duty Cycle for DC Microgrid Applications

Bhaskar

Alammari

Meraj

et al. 2019

IEEE Trans. on Ind. Applicat.

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DC microgrid is gaining attraction and a recent trend in distribution power generation system due to penetration of renewables (especially Photovoltaic (PV) or Fuel Cell (FC)). In this paper, a new Triple-Switch-Triple-Mode High Step-Up converter (TSTM-HS converter) is presented for DC microgrid applications. In the proposed converter, voltage lift technique is employed and range of duty cycle is extended by incorporating an additional switch in converter circuitry. By doing this, high voltage conversion ratio is achieved without using a transformer, coupled inductor, and multiple stages of switched capacitors. Moreover, the TSTM-HS converter operated in three modes with two types of the duty cycles to achieve low to high voltage conversion without using high duty cycle for each switch. The effects of difference in the inductance values on the regulation and operating behavior of the TSTM-HS converter are discussed. The Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) characteristics of TSTM-HS converter are discussed in detail with steady-state analysis and boundary condition. The comparison is provided to highlight the benefits of the TSTM-HS converter. The selection of semiconductor devices and the design of reactive components are discussed for the TSTM-HS converter. The experimental results of the proposed converter are provided which validate the theoretical approach, performance, and feasibility of converter.

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“…In order to achieve these demands, the converters must be switched by high frequency. However, it is impractical to raise the frequency of operation due to increase of the switching losses and electromagnetic interferes (EMI) [4]- [6]. Resonant converters with soft switching (Zero-voltage switching and Zero-current switching) have been proposed, and undoubtedly they are favored than hard switching conventional converters due to their ability to work at high frequency and reduce switching losses [2], [7]- [12].…”

Section: Introductionmentioning

confidence: 99%

Phase-shifted Series Resonant Converter with Zero Voltage Switching Turn-on and Variable Frequency Control

Salem¹,

Jusoh²,

Idris³

et al. 2017

IJPEDS

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This paper presents a phase shifted series resonant converter with step up high frequency transformer to achieve the functions of high output voltage, high power density and wide range of Zero Voltage Switching (ZVS). In this approach, the output voltage is controlled by varying the switching frequency. The controller has been designed to achieve a good stability under different load conditions. The converter will react to the load variation by varying its switching frequency to satisfy the output voltage requirements. Therefore in order to maintain constant output voltage, for light load (50% of the load), the switching frequency will be decreased to meet the desired output, while for the full load (100%) conditions, the switching frequency will be increased. Since the controlled switching frequency is limited by the range between the higher and lower resonant frequencies , the switches can be turned on under ZVS. In this study, a laboratory experiment has been conducted to verify the effectiveness of the system performance.

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An Isolated Semiresonant DC/DC Converter for High Power Applications

Cited by 9 publications

References 8 publications

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

A New Triple-Switch-Triple-Mode High Step-Up Converter With Wide Range of Duty Cycle for DC Microgrid Applications

Phase-shifted Series Resonant Converter with Zero Voltage Switching Turn-on and Variable Frequency Control

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